34
Service – warning and safety instructions
This equipment is a telephone specifically designed for operation in a
harsh industrial environment. The following warning and safety instruc-
tions must be heeded:
1. Do not connect or operate the telephone with voltages other than
the voltages specified. Make sure the PE wiring is connected
properly. All cabling should be routed such that it does not present a
tripping hazard.
2. The telephone must only be operated under the specified ambient
conditions (see section "Technical data"). Adverse ambient condi-
tions, such as e.g. ambient temperatures which are to high or to
low, are not permissible because this promotes the failure of elec-
tronic components.
3. It must be ensured that the telephone, the connection wire etc. are
not damaged. It is not permissible to operate the telephone in a
damaged state.
4. When operating the telephone, please heed the legal and commer-
cial / industrial regulations, accident-prevention regulations and
electrical regulations / provisions.
5. Repairs are only permissible with original spare parts which must be
replaced by a specialist. Other replacement parts can cause dam-
age and render the guarantee invalid.
6. The stipulated position of utilisation must be adhered to. The tele-
phone must be installed on a plane surface only, in vertical
operating position.
7. Magnetic fields with energy technical frequencies can cause a slight
impairment of the listening quality. If this is the case, please ensure
that the telephone is installed at a suitable location.
8. The telephone must be switched off before opening. Wait at least 4
minutes after switching off power before opening the telephone!
9. In the open state of the telephone no dust may ingress the device.
10. Upon mounting or demounting the device, do not damage the cover
seal, which keeps the cover tight, or the collar on the lower part of
the housing.
11. The mouthpiece horn of the receiver consists of a non-conductive
plastic material. It may become dangerously charged at high air
speeds. Consequently, cleaning the mouthpiece horn with
pressurized air is prohibited.
12. If there is a high concentration of sulphurous gases in the envi-
ronment a rust film can arise.
13. Changes to the product which are in the interests of technical
progress are possible even without prior notice.
14. The Programming Interface (10 pins) is only used for programming
the internal microcontroller during manufacturing. Neither connect
anything to this interface nor short – circuit the pins.
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